Sift proofing membrane for bulk lift bag and method

Details Sift proofing membrane for bulk lift bag and method Sift proofing membrane for bulk lift bag and method

1999-02-17

2000-05-02

Pascua, Jes F.

Flexible bags

Wall details

Multi-layer or ply

383 67, 383105, 383903, B65D 3316, B65D 3300

Patent

active

060564407

ABSTRACT:
A membrane having dimensions slightly larger than the dimensions of a bulk lift bag is inserted into the bag, so that the membrane may expand as the bag is filled without tearing. The membrane may be secured to the bag at a flange, without perforating the membrane.

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patent: 5762421 (1998-06-01), Ross
patent: 5938338 (1999-08-01), McDonough

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